Nasal mask shell



FIG. 1 is a perspective view of a nasal mask shell of the present invention.

FIG. 2 is a front view of a nasal mask shell of the present invention.

FIG. 3 is a right side view of a nasal mask shell of the present invention, the left side view being a mirror image thereto.

FIG. 4 is a top plan view of a nasal mask shell of the present invention.

FIG. 5 is a bottom plan view of a nasal mask shell of the present invention.

FIG. 6 is a rear view of a nasal mask shell of the present invention.

FIG. 7 is a perspective view of a second embodiment of a nasal mask shell of the present invention.

FIG. 8 is a front view of a second embodiment of a nasal mask shell of the present invention.

FIG. 9 is a right side view of a second embodiment of a nasal mask shell of the present invention, the left side view being a mirror image thereto.

FIG. 10 is a top plan view of a second embodiment of a nasal mask shell of the present invention.

FIG. 11 is a bottom plan view of a second embodiment of a nasal mask shell of the present invention; and,

FIG. 12 is a rear view of a second embodiment of a nasal mask shell of the present invention. 

The ornamental design for a nasal mask shell, as shown and described. 